On Thu, Sep 06, 2018 at 08:33:34PM +0200, Borislav Petkov wrote: > On Thu, Sep 06, 2018 at 08:54:52AM -0700, Sean Christopherson wrote: > > My thought was that we could simply define a second array for the SEV > > case to statically allocate for NR_CPUS since __decrypted has a big > > chunk of memory that would be ununsed anyways[1]. And since the second > > array is only used for SEV it can be freed if !SEV. > > Lemme see if I get it straight: > > __decrypted: > > 4K > > __decrypted_XXX: > > ((num_possible_cpus() * 32) / 4K) pages > > __decrypted_end: > > Am I close? Yep, though because the 4k chunk in __decrypted is @hv_clock_boot that's used for cpus 0-127, __decrypted_XXX would effectively be: (((num_possible_cpus() * 32) / 4k) - 1) pages
